Roadway.



. MEHLHORN ROADWAY.

APPLICATION FILED MAR. 12. 1918.

Patented July 9, 1918.

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ROADWAY.

Specification of Letters Patent.

Patented July 9, iei's.

a licatibii filed Meat 12, 1918. seas in). 222,665.

To all whom it mag concern I Be it knowii that I, CriARLns MQI-ILHOR'N,a citizen of the United States residing'at Philadelphia, in the countyof Philadelphia and State of Pennsylvania, have'invented certainnewt-11d useful Improvements in Roadways, of which the followingaspecification.

. of a roadway made in accordance with my ini' eiitio'r i, v U v I p Fig2 is a sectional 'elevati'oii taken on the lines-21016 Fig. 1, p

F 3.is,a fragmentary top plan View of a rail which provides a wearsurface for the roadway, Fig. A is a side view of Fig. 3, Fig. 5 is aninverted plan view ofFig. 3; V Fig. 6 is an enlarged fragmentary sectiontaken oaths line 66 o Fig. 1,

Figs. 7, ,8, and 9 are views of similar nature to ig'. 2 showingdifferent modifications of my invention, and h Fig; 10 is a fragmentarysectional. view showing a modification of, my invention.

Referring" to Figs. 1 to 6, inclusive, of the drawing, 1 represents thebed. of myimproved roadway which isforin ed of concrete or concretecement. Spaced apart and embedded within the bed lare the metallic rails2 and 3 which are similarly constructed and have their upper surfaces 4flush with the top surface 5 ofthe bed 1. These rails have rough uppersurfaces, the roughei'iing within the bed 1 while the latter is in asoft or plastic stateaiid prior to the setting of the same. The rails 2are preferably made in sectional lengths of any sine which is convenientto handle and made channelshape 'in cross se'ction with their sides 6tapering downwardly, as clearly shown in Fig. 6, to provide undercutpockets 7 which are filled with the concrete oicement of the roadway andthereby anchor the rails with in the road bed. 4

As illustrated, I have provided ad 1litioi1al anchoring means for therails within bed 1 by respectively stamping and pressing to gues Sand 9out of the opposite sides 6 and top oftherails. v v

The tongues 8 are hooked at their-inner ends, as shown atlO, andpocketsll (see particularly Fig. are thus provided so that aportion ofthe cement ofthe bed 1 is housed or confined in these pockets l l Tl'iusauxiliarymeans isprovided to prevent any chance of lateral displacementof the rails. Furthermore, the tongues 8 are spaced below the lowersurface 1 2 of the top of the rails so that a portion of the cem'ent ofthe bed 1. is interposed between the tops of the tongues 8 and thebottom surface 12 ofthe rails. Hencethese tongues 8 also serve toprevent the rails from rising away from the cement bed.

pockets 135m which a portion ofthe cement.

of the bed 1 is confined, and additional means thus provided to anchorthe rails Within the bed 1.

The tonguesfi and 9 are provided throughout the lengths of the rails andmay be formed at any suitable distance apart. according to requirements.The top surfaces 4 of the rails provide a track for vehicles andconstitute wear surfaces for the cement bed 1; The rails formed inaccordance with the above description are capable of supporting greatWeight, such for example as heavy motor trucks or other vehicles whichmust necessarily run upon public roadways. Furthermore, the rails 4- aremade comparatively wide so that ordinary variation in the travel of avehicle is possible without the vehicle runningoif the rails. Also sincethe tops of the rails are made flush with the The tongues 9 extenddownwardly into the.

{)erial jar to the vehicle or injury to the road ed.

The rails can be cheaply made, if desired, out of sheet metal which isrolled and punched to provide the tapered sides 6.and tongues 8 and 9.

,In the form of my invention shown in Fig. 7, I have shown a cement orconcrete bed 14 in which are embedded pedestals 15 which may be made ofwood or other suitable ma' terial'. These pedestals flare downwardly andthereby are securely anchored within the bed 14:. Rails 16 are providedand have rods or spikes 17 which secure them to the pedestals 15*. In,this instance also the tops of the rails are made flush with the topsurface of the bed 14 and the rails and pedestals are securely embeddedwithin the cement of the bed 14:, while the latter is in a plastic orsoft condition and prior to the setting of the same. r

In the for-in illustrated in Fig. 8, the rails 18 are formed byembedding blocks 19 within cement bed 20, while the latter is in a softand plastic state. The .tops of the rails are made flush with the top ofthe bed 20. In Fig; 9 I have shown a construction which is substantiallysim'ilarto the form offmy invention illustrated in Figs. 1 to6,

" inclusive, with the exception that instead of making the entire bed ofcement or concrete, I provide cement or concrete pedestals 21 which arespaced apart and the rails are embeddedwithin these pedestals. The spacebetween the pedestals can be filled in with any other material desired,such for example as ordinary ground or earth. In all other respects theconstruction of the elements is similar to that described in connectionwith Figs. 1 to 6 inclusive, and I have therefore given similar partscorresponding reference numerals.

above described, has spikes or bolts 23 inserted through the sidesthereof and are provided with heads 24. I also insert spikes or bolts 25downwardly from the top of the .rail and provide these spikes with heads26.

bed 27.- e

l Copies of this patent may be obtained for These spikes'or' boltsprovide additional within the concrete anchors for the rail While I havedescribed my invention as taking a particular form,- it will beunderstood that the various parts of my invention may be changed-without departing from the spirit thereof, and hence I do not limitmyself to the precise construction set forth, but consider that I am atliberty to make such changes and alterations as fairly come within thescope of the appended claims.

Having thus described my invention, what I claim as new and desire tosecureby'Letwith the top surface of the bed, each of said 'i railshaving side flanges tapering downwardly and toward each other, said sideflanges being embedded within the concrete bed, the space between saidflanges and said top portions of the rail also being filled withscribed. e

3. A roadway including a concrete bed, and rails spaced apart andembedded within said bed, said rails having top surfaces flush with thetop surface of the bed, said rails having tongues partly cut therefromand embedded within said bed, substantiallyas described.

4. A roadway including and rails spaced apart and embeddedwithin saidbed, said rails having top surfaces flush with the top surface of thebed, said rails having hooked tongues spaced apart within concrete ofthe bed, substantially as" de- 7 a concrete bed; 7

their lengths and embedded within saidl bed, substantially asdescribed.- V.

In testimony whereof I have signed-my name to this specification in thepresenceiof two subscribing witnesses. 7 1

CHARLES MEHLHORN. I

Witnesses V V r" MARY A. ING AR, 1 CHAS. Po'rTsQ five cents each, byaddressing the Gommissionerbf latents WashingtonyhOP- 1 l

